CVE-2021-27103: Accellion FTA Server-Side Request Forgery (SSRF) Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 11.4% chance of exploitation in the next 30 days.

Accellion FTA 9_12_411 and earlier is affected by SSRF via a crafted POST request to wmProgressstat.html. The fixed version is FTA_9_12_416 and later.

Affected products

• Accellion FTA: before 9_12_416 (fixed in 9_12_416)

Published 2021-02-16. Last modified 2026-06-17.